Riddhi Kothari, DO

Rebecca Kostopoulos, PMHNP, is a board-certified psychiatric nurse practitioner committed to helping individuals facing mental health challenges lead full and balanced lives.

Her practice primarily focuses on medication management, often combined with supportive or emotionally focused therapy during 30-minute follow-up visits. When appropriate, Rebecca may recommend involving an additional therapist to ensure the most effective and comprehensive care.

She earned her Master of Science in Nursing with a specialization in psychiatry from Columbia University and her Bachelor of Science in Nursing from Boston College. Her training includes psychiatric diagnosis, medication management, and both psychodynamic and cognitive-behavioral therapies.

With over a decade of experience, Rebecca has evaluated and treated adults in a variety of clinical settings. Her previous roles include working at Elmhurst Hospital’s Comprehensive Psychiatric Emergency Program, Gracie Square Hospital’s inpatient unit, as well as in community health centers and skilled nursing facilities.

As a nurse practitioner, Rebecca believes that mental health is just as vital as physical health. She values the therapeutic relationship and approaches treatment with empathy and collaboration, ensuring that each patient receives personalized and compassionate care.

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Dr. Ernesto Gonzalez is a board certified adult psychiatrist. He completed his undergraduate training at Yale University and received his medical degree from the University of Pennsylvania School of Medicine. He completed his residency training at the Cambridge Health Alliance/Harvard Medical School Adult Psychiatry Training Program. Dr. Gonzalez prefers a holistic approach that takes the time to know the whole patient, incorporating biological, psychological, social, and cultural perspectives in crafting a comprehensive, individualized, treatment plan. He practices medication management combined with supportive therapy, typically delivered within 30 minute sessions. Elements of psychodynamic, dialectical behavior and cognitive-behavioral therapy will also be incorporated into sessions based on a patient's individual needs. If additional therapy is needed, Dr. Gonzalez will recommend the addition of an individual therapist to the patient's treatment team. Having dedicated his career to adult outpatient psychiatry, Dr. Gonzalez has worked with patients from a wide range of ages, cultures, ethnicities, and social settings across the New York City area. His primary focus is working with patients with depression, anxiety, ADHD, and PTSD. He also values working with people adjusting to changes in their lives, whether it be grieving the loss of a loved one, changes in employment, relationships, or adjusting to changes that come with age. Prior to joining Talkiatry, Dr. Gonzalez was an Assistant Professor at the NYU Grossman School of Medicine and served as Director of the Adult Outpatient Psychiatric Department, Assertive Community Treatment (ACT) Team, and Collaborative Care Departments at Woodhull Hospital in Brooklyn, New York. He also had a small practice near his home. Dr. Gonzalez has also had a lifelong interest in meeting new people and experiencing different cultures. This interest has taken him as far away as the townships of Cape Town, South Africa and as close as his local diner, and it edifies the work he does with patients.

Dr. Stansberry holds the position of staff psychiatrist at Talkiatry. He is board-certified in Adult Psychiatry by the American Board of Psychiatry and Neurology. Stansberry's practice focuses on medication management and also incorporates supportive therapy techniques, typically in 30-minute follow-up visits. In some cases, Dr. Stansberry may believe that additional therapy is also needed and ask that you bring a therapist into your care team. Dr. Stansberry received his medical degree from the Louisiana State University Health Sciences Center in New Orleans. He completed his residency training through the Louisiana State University/Ochsner Health Foundation Psychiatry Residency program. He has experience working in inpatient, emergency, and consult-liaison psychiatry but particularly enjoys the opportunity to work longitudinally with patients in the outpatient setting.**THIS PROVIDER CANNOT PRESCRIBE CONTROLLED SUBSTANCES FOR LOUISIANA PATIENTS**

Margaret Mary Reyes, MSN, APRN, PMHNP-BC, is a board-certified Psychiatric Mental Health Nurse Practitioner committed to delivering patient-centered and compassionate mental health care. A proud Florida native, she earned her Bachelor of Science in Nursing (BSN), Master of Science in Nursing (MSN), and post-master’s certification in Psychiatric Mental Health Nursing from Florida Atlantic University (FAU). Her academic research focused on improving outcomes for women living with Premenstrual Dysphoric Disorder (PMDD).

Margaret has advanced practice experience in both inpatient and outpatient psychiatric settings. She has treated individuals with a wide range of mental health conditions, including psychotic disorders, bipolar spectrum disorders, depressive and anxiety disorders, trauma-related disorders, attention deficit disorders, personality disorders, substance use and co-occurring disorders, eating disorders, suicidality, homelessness, and severe mental illness (SMI) within the criminal justice system. Her clinical background also includes acute care experience in oncology, medical-surgical, telemetry/cardiac step-down, intensive care, nursing research, and consultation-liaison psychiatry.

She takes an integrative and comprehensive approach to mental health care, combining medication management with evidence-based complementary and alternative interventions. Her practice is grounded in the understanding of the mind-body-spirit connection and the gut-brain axis. Margaret incorporates supportive therapy, motivational interviewing, and mindfulness-based cognitive techniques to support her patients’ overall well-being.

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Dr. Kathryn Bertacchi is board-certified in both adult and child & adolescent psychiatry. Originally from California, she earned her medical degree from University College Cork in Ireland and completed residency and fellowship at Emory University. She has practiced in varied settings, including developing specialized clinics in eating disorders and gender-affirming care. She is a member of several professional organizations including AACAP, APA, and WPATH.

Dr. Bertacchi fosters an inclusive, nonjudgmental environment where patients feel safe to be themselves. She approaches care with curiosity, compassion, and deep respect for each person’s unique story, aiming to help individuals feel genuinely heard and supported throughout their treatment journey.

In early sessions, Dr. Bertacchi works collaboratively to understand patients' lives, goals, and challenges. While her focus is medication management, she integrates cognitive-behavioral, humanistic, and supportive techniques. She may recommend additional therapy as needed and particularly values working with youth and adults from diverse backgrounds.

Myrtle Davenport is a dual certified Family Psychiatric Nurse Practitioner with over 12 years of experience in healthcare. She completed her Masters of Science in Nursing (MSN) degree with a concentration in Family Nurse Practitioner at Chamberlain University and a Post Master’s in Psychiatric Mental Health Nurse Practitioner at Valdosta State University. Myrtle is skilled in assessing and treating a variety of mental health disorders including but not limited to anxiety, major depression, PTSD, ADHD, OCD, and other mood disorders across the life span. She is trained in psychiatric diagnosis, medication management, and supportive therapy. Over the past 7 years, she has gained valuable experience in a number of settings, including outpatient, inpatient, and residential facilities, community mental health clinics, and private practice.

Myrtle is dedicated to providing a safe and nonjudgmental environment where patients can expect to be heard, emotionally validated, and supported. She will ensure that patients are well-informed, empowering them to be active participants in managing their care. By fostering a strong therapeutic relationship, she will support her patients in achieving long-term mental wellness and resilience.

As a dedicated Psychiatric Nurse Practitioner, Myrtle provides comprehensive mental health care to individuals across the lifespan, helping them navigate through their mental health challenges with a holistic, compassionate approach. Her clinical practice involves conducting a thorough assessment and gathering relevant information from patients about their medical, psychiatric, and social history. Through open and empathetic communication, she will ensure a deep understanding of their symptoms, challenges, and goals. Based on the assessment, she will work closely with her patients to develop an individualized treatment plan and lifestyle recommendations. She will offer education on mental health conditions, coping strategies, and self-care techniques. She also provides referrals to therapists and other support services, helping patients develop the skills they need to thrive. She also believes in providing psychoeducation to patients, families, and caregivers. Myrtle's approach to patient care is grounded in empathy, respect, and evidence-based practices, and she is committed to fostering a supportive, collaborative environment where patients feel empowered to achieve their mental health goals.

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